rewrite the sentences using must, mustn039;t, need to, has to, don039;t

Rewrite the sentences using must, mustn't, need to, has to, don't have to

1. It isn't necessary for children to buy a ticket. Children ....
2. It's our duty to look after our health. We.....
4. It's necessary for Assel to do her exercises. Assel...
5. It's against the rules to play football here. We...


И еще одно пожалуйста!!!
Rewrite the sentences using might
1. It is possible he'll feel better tomorrow
2. There is a chance I'll get a good night's sleep
3. I'm not sure if he will take up a hobby
4. It's possible that they'll follow my advice